The Lancaster Water G-175 Multi-Purpose Air Gap ensures sanitary separation and backflow prevention in water treatment and drainage systems. Designed for use in residential and commercial water systems, this precision-molded air gap provides reliable protection against contamination.
True Air-Gap Design – Prevents backflow and maintains compliance with plumbing codes.
Compatible with Schedule-40 Pipe – Easily connects to rigid Schedule-40 DWV standpipes.
Durable Construction – Built to withstand various environmental conditions for lasting performance.
Product Highlights
This air gap fitting is compatible with water softeners, filtration systems, reverse osmosis units, and other water treatment equipment. Constructed from high-quality PVC materials that offer excellent corrosion resistance and long service life.
Product Information
Standard Information
Brand: LANCASTER PUMP
Manufacturer Part Number: G-175
Technical Specifications
Item Type
Plumbing & HVAC
Brand
Lancaster Water Treatment
Manufacturer
Lancaster Water Group
MPN
G-175
Sub Type
Drain Line Adapter
Material
Plastic
Overall Width
1.5 in
Application
Commercial, Residential
Pipe Size Compatibility
1-1/2 PVC to 3/4 Female connection
Model Number
G-175
Product Type
Multi-Purpose Air Gap
Inlet Connection
3/4-inch Female Thread (FIPT)
Outlet Connection
1-1/2-inch PVC Slip or Hub
Function
Prevents backflow contamination between potable and drain systems
Operating Temperature
Up to 140°F (60°C)
Pressure Rating
Up to 100 psi (non-shock, at ambient temperature)
Installation Orientation
Vertical, gravity drain
Applications
Water softeners, filtration units, RO systems, condensate drains, and equipment discharges
Compliance
Conforms to applicable plumbing and backflow prevention codes
Color
White PVC
Maintenance
No moving parts; periodic cleaning recommended to ensure proper drainage